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Full text of "JIS B 6501: Test code for performance and accuracy of wood working machinery"

JAPAN 



a^- EDICT OF GOVERNMENT "^4 

In order to promote public education and public safety, equal justice for all, 
a better informed citizenry, the rule of law, world trade and world peace, 
this legal document is hereby made available on a noncommercial basis, as it 
is the right of all humans to know and speak the laws that govern them. 



JIS B 6501 (1975) (English) : Test code for 
performance and accuracy of wood working 
machinery 




The citizens of a nation must 
honor the laws of the land. 

Fukuzawa Yukichi 




'k'.*-^- 1^:r 



BLANK PAGE 





PROTECTED BY COPYRIGHT 



BLANK PAGE 





PROTECTED BY COPYRIGHT 




UDC 674.05.001.4 



Japanese Industrial Standard 



Test Code for Performance 

and Accuracy of Wood 

Working Machinery 



JIS B 6501 



-1975 



Translated and Published 



by 



Japanese Standards Association 



Printed in Japan 



PROTECTED BY COPYRIGHT 1 5 S 



Translation without guarantee 

In the event of any doubt arising, the original 

standard in Japanese is to be evidence 



PROTECTED BY COPYRIGHT 



UDC 674.05,001,4 

JAPANESE INDUSTRIAL STANDARD J I S 

Test Code for Performance and Accuracy of 

Wood Working Machinery B 6501-1975 

(Reaffirmed: 1978) 



1. Scope 

This Japanese Industrial Standard specifies, pertaining to the wood 
working machinery(^), the basic items and their testing methods (general 
rules for testing) commonly used in cases where tests for running 
performance, static accuracy, dynamic accuracy, and working accuracy of 
the machinery are carried out. 

Note (^) The test methods prescribed in this standard shall be 

applied correspondingly to those used for wood working 
machines having special construction or use. 

Remark: The test and inspection items for each type of wood 

working machines shall be selected from those given in this 
standard according to the aim and performance of the 
machine, and shall be specified in the separate standard 
together with the provisions of tolerances for inspections. 

2. General Rules for Testing 

2.1 The test shall, as a rule, be carried out in the factory where the 
wood working machines were manufactured. 

2.2 The test shall be carried out after the wood working machine has 
been installed and adjusted in order to be given no influence upon the 
performance and accuracy required for the running of the wood working 
machine, 

2.3 The test shall be carried out, in principle, on a completely finished 
machine. 

2.4 The test shall be carried out on the machine in which electric 
motors, electric accessories, and other equipment are mounted, and lubri- 
cant, hydraulic oil, and others are appropriately filled. 

2.5 The test shall be carried out, in principle, after each moving part 
of the machine has been run and its temperature and lubrication become 
stable. 

2.6 The static accuracy shall be measured, in principle, under such a 
condition that the wood working machine is not subjected to any machining 
load. 

2.7 When two or more methods are given for one item to be checked, 
one method shall be selected from among them for the test. 

2.8 The measuring instruments to be used for tests and their accuracies 
are specified in Appendix. 



Applicable Standards and Reference Standards: See page 26, 



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2 
B 6501-1975 



2.9 When the measuring; instruments specified in Appendix are not 
applicable s the test may be carried out with other instruments considered to 
be, in accuracy, equivalent to or better than the specified instruments. 

2.10 When abnormality has occurred during a test, the cause of the 
abnormality shall be looked for and adjustment shall be made, and then the 
test shall be carried out again from the beginnings in principle. However, 
there is no need to repeat the test the result of which is considered not 

to have been influenced by the adjustment of the abnormality. 

2.11 For wood working machines made by the same design, the test 
results for the rigidity may be represented by the result obtained from the 
test carried out on one machine, dispensing with the tests on the other 
machines, 

2.12 When it is difficult to test a wood working machine by testing 
methods specified in this standard because of its configuration, the 
substituting methods shall be selected from those given in the specifications 
of this standard* 

2.13 On static accuracy test, when an actual distance of measurement is 
smaller than the specified value, on account of the configuration of wood 
working machines, the tolerance shall be calculated in proportion to a given 
distance. In this case, it shall be 0.005 mm when the calculated tolerance 
is less than 0,005 mm, unless otherwise specified. 

2.14 When the result of static test is different from that of working 
accuracy test having the same test objective, the greater stress shall be 
laid on the result from the latter test. 

3. Specifications of Running Tests 

3.1 Test Objectives and Items Running tests are intended to test the 
performance required for running wood working machines, and they consist 
of functional test, no-load running test, load running test and rigidity 
test. 

3.2 Function al Test Functional tests are intended to examine, by 
operating each moving part of a machine, the smoothness of its operation 
and the certainty of its function* The methods expressing test results and 
test items and their methods shall be as follows: 

(1) Expressing Method Results shall be expressed as "good" or 
"bad" in function. 



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3 
B 6501" 



■1975 



(2) Test Items and Methods 



Item 



No. 



Testing method 



Typical examples of appli- 
cation (Reference) 



Main 
motion 



Start J stop 
and running 
operation 



1-11 



At one suitable speed, 
perform start and stop 
operations (including 
braking, reversing, inter- 
rupted motion and others) 
repeatedly, and examine 
smoothness and certainty 
of operation. 



Vertical movement of hot 
press plate 

Rotation of spindle of cir- 
cular saw machine or planing 
and moulding machine 

Running of carriage 



Operation of 
changing speed 



1-12 



Change the speed and exain- 
ine the smoothness of ope- 
ration and the certainty 
of indication of control 
device. 



Rotation of veneer lathe 

spindle 
Rotation of wood lathe 

spindle 



Feed 
motion 



Start, stop 
and running 
operation 



1-21 



Choose one suitable feed 
rate, perform start and 
stop operations (including 
braking, reversing, inter- 
rupted motion and others) 
repeatedly and examine 
the smoothness and the 
certainty of operation. 



Knife holding stand and 
table of veneer slicer 
Head stock of carriage 
Feed of automatic planing 
and moulding machine 



Operation of 
changing feed 
speed 



1-22 



Change the feed speed, 
and examine the smoothness 
of operation and the cer- 
tainty of indication. 



Operation of 
changing feed 



Operation of 
changing 
in-feed speed 



Operation of 
automatic 
reversing of 
feed 



Operation of 
automatic 
stopping 
device 



Manual opera- 
tion of feed 



1-23 Change the feed, and 

examine the smoothness 
of operation and the 
certainty of indica- 
tion. 



1-24 



1-25 



1-26 



1-27 



Change the in-feed speedy 
and examine the smooth- 
ness of operation and 
certainty of indication. 



Feed speed of table of 

veneer knife grinder 
Feed speed of rip saw or 

automatic planing and 

moulding machine 
Rotating speed of feed 

roller of band saw machine 



Feed of plane stock of 

veneer lathe 
Set work amount of carriage 



Mechanical in-feed of 
veneer knife grinder 



Examine the smoothness 
and the certainty of posi- 
tioning and action of 
automatic reversing device. 



Feed of plane stock of 

veneer lathe 
Running feed of lathe 

charger 
Table feed of knife grinder 



Examine the smoothness and 
the certainty of position- 
ing and action of auto- 
matic stopping device. 



Vertical feed of table of 

veneer slicer 
Automatic stopping device 

for carriage head stock 



Examine the smoothness and 
the uniformity of motion 
by manual operation. 



Doctor roll of glue spreader 
Vertical movement of spindle 

of wood borer 
Ruler of table band saw 



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B 6501-1975 



Item 


No. 


Testing method 


Typical examples of appli- 
cation (Reference) 




Operation of 
engaging and 
disengaging 
the devices 
for mechanical 
feed and rapid 
traverse 


1-31 


Examine the smoothness and 
the certainty of position- 
ing and operation of en- 
gaging and disengaging the 
devices for mechanical 
feed and rapid traverse. 


Feed mechanism for set work 
mechanism of veneer lathe 


Adjustment 
motion of 
positioning 


Operation of 
automatic 
positioning 
device 


1-32 


,„,,,,.„.„,„. ,^ .,„„ 

Examine the certainty of 
setting of position to be 
commanded and operation of 
automatic stopping device 
for positioning of ele- 
ments in performing me- 
chanical feed. 


Positioning of saw blade 
of double sizer 
Stopping device 




Operation of 
position ad- 
justment and 
clamping 


1-33 


Examine the smoothness and 
uniformity of movement by 
mechanical or manual ope- 
ration. In addition, 
clamp the element at a 
position of its travel 
and examine the certainty 
of its operation. 


Wood clamping device for 
logs in veneer slicer 

Pivoting and vertical move- 
ment of arm of radial saw 

Operation of the ruler of 
table band saw 


Mounting 

and 

diomounting 


Holding and 
releasing of 
cutting tool 


1-41 


Examine the certainty and 
smoothness of holding and 
releasing of cutting tool. 


Circular saw of double sizer 
Knives of planing and 

moulding machine 
Router bit 


Loading and 
unloading of 
workpiece 


1-42 


Examine the certainty and 
smoothness of loading and 
unloading of workpiece. 


Loading of workpiece on 
veneer lathe, hollow-chisel 
mortiser and dovetail 
machine 




Electrical 
equipment 


1-51 


Test the insulation of 
electrical equipment 
before and after the 
running test. 


Electrical equipment of band 
saw machine, planing and 
moulding machine and veneer 
lathe 




Safety device 


1-52 


Test the certainty of 
safety device for ope- 
rator and the protection 
of machine against damage. 


Front and back moving device 
and stopping device of plane 
stock of veneer lathe 


Auxiliary 
equipment 


Lubricating 
device 


1-53 


Test the certainty of 
functioning such as oil 
tightness and correct 
distribution of oil. 


Automatic oil-feed device 




Hydraulic 
system 


1-54 


Test the certainty of 
functioning such as oil 
tightness and pressure 
regulation. 


Hydraulic system of band saw 
machine, hot press, veneer 
lathe, etc. 




Pneumatic 
system 


1-55 


Test the certainty of 
functioning such as air 
tightness and pressure 
regulation. 


Pneumatic system of band 
saw machine, veneer 
lathe and veneer clipper 




Attachment 


1-56 


Test the certainty of 
functioning of attachment. 






Other 
equipment 


1-57 


Test the certainty of 
functioning of equipment. 


Dust collector for band 
saw machine 



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3.3 No-Load Running Test Methods The wood working machine shall be 
run under the predetermined no-load condition and shall be tested for 
running conditions (^), variation of temperature and required electric power. 
Methods of expressing test results, test items and their measuring methods 
are as follows: 

Note (^) Running conditions mean speed, and number and length of 
strokes, and their deviations from indications, and the 
conditions of vibration, noise, lubrication, airtightness, oil 
tightness, etc, 

(1) Method of Expressing Test Results Test results shall be ex- 
pressed in terms of running conditions, temperature, required 
electric power and others. 

(2) Test Items and their Measuring Methods 



Item 


No. 


Measuring 
instrument 


Measuring 
method 


Typical examples of 
application (Reference) 


Spindle speed 


2-11 


Speedometer 
Stroboscope 


Measure spindle 
rotation speed 
throughout each 
step of speed. 


Spindle of band saw 
machine 

Spindle of veneer 
lathe router, and 
moulding machine 


Feed 


2-21 


Speedometer 
Call meter and 
stopwatch 


Measure feed rate 
throughout each 
step of feeds. 


Rotation of feed 
roller of automatic 
roller band saw 
machine 

Caterpillar of 
rip saw 


Tempera- 
ture 


Temperature 
of bearing 


2-31 


Etched-stem 
liquid-in- 
glass 
thermometer 

Thermocouple 
thermometer 

Resistance 
thermometer 


Rotate the spindle 
at speeds of lowest 
to highest through- 
out each step and 
then measure the 
temperature of 
bearing while 
running at the 
highest. 


Main spindle bearing 
of circular saw, and 
planing and moulding 
machine 

Bearing for saw spin- 
dle of band saw 
machine 

Bearing for wheel 
spindle of knife 
grinder 




Temperature 
of hydraulic 
fluid 


2-32 


Measure the tempera- Hydraulic fluid of 
tare of hydraulic hvdraulic carriage 
fluid. 




Temperature 
of spindle 
head, gear 
box, etc. 


2-33 


Measure the tempera- Gear box of automatic 
ture of spindle planing and moulding 
head, gear box, etc. machine 

Gear box of slicer, or 
veneer lathe 

1 




Room tem- 
perature 


2-34 


Measure the room 
temperature around 
wood working 
machine. 





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B 6501-1975 



Item 


No. 


Measuring 
instrument 


Measuring 
method 


Typical examples of 
application (Reference) 


Required electric 
power 


2-41 


Watt meter 
Voltmeter 
Ammeter and 
i power-factor 
{ meter 


Measure the re- 
quired electric 
power (watt, volt 
and ampere) under 
given running con- 
ditions. At the 
end of running 5 
measure the total 
power required at 
full running. 


Carriage of band saw 

machine 
Circular cutter block 

of planing and 

moulding machine 
Main spindle of veneer 

lathe 


Vibration 


2-51 


Vibration 

indicator, 
acceleromeCer 


Sensory test, or 
JIS B 6003 shall 
be correspondingly 
applied. 




Noise 


2-61 


Sound level 
meter 


Sensory test, or 
JIS B 6004 shall 
be correspondingly 
applied. 





3,4 Load Running Test Method The wood working machine shall be run 
under the loading conditions and then shall be tested for its running con- 
ditions (^) and required electric power. Methods of expressing test re- 
sults, and test items and their measuring methods are as follows: 

Note (^) Running conditions mean speed and number and length of 
strokes and their variation, and conditions of vibration, 
noise, lubrication, airtightness, oil tightness, etc, 

(1) Methods of Expressing Test Results Test results shall be 
expressed in terms of running conditions and required electric 
power. 

(2) Test Items and their Measuring Methods 



Item 


1 

No. 


Measuring 
instrument 


Measuring 
method 


Typical examples of 
application (Reference) 


Capacity 
of ma- 
chine 


Power 


3-11 


Watt meter 

Voltmeter 
1 Ammeter and 
1 power- factor 
I meter 


Change the load and 
measure power at 
each step of feed. 




Vibration 


3-21 


Vibration 

indicator 
Accelerometer 


Sensory test or 
JIS B 6003 shall be 
correspondingly 
applied. 




Noise 


3-31 


Indicating 
sound level 
meter 


Sensory test or 
JIS B 6004 shall 
be correspondingly 
applied. 




Condition of surface 
finish 


3-41 




Sensory test. 





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B 6501-1975 



3.5 Rigidity Test Methods In rigidity tests, the deformation of a 
machine"" shall be tested, by applying the load to the machine part the 
deformation of which is considered to affect significantly the working 
accuracy. The method of expressing test results, and test items and their 
measuring methods are as follows: 

(1) Method of Expressing Test Results The results shall be ex- 
pressed as the total displacement caused by elastic deformation 
and clearance of mechanism. 



(2) Test Items and their Measuring Methods 



Item 



No. 



Measuring 
instrument 



Measuring 
method 



Drawing 



Typical examples 

of application 
(Reference) 



Rigidity 
of spin- 
dle 

against 
bending 



5-11 



Test Indi- 
cator and 
weighing 
instrument 



Measure the dis- 
placement of 
spindle when the 
load (F) is ap- 
plied to the 
spindle verti- 
cally. 



6 



Saw spindle of 
circular saw 

Spindles of 
veneer lathe 
and band saw 
sharpener 



Result- 
ant 

rigidity 
of spin- 
dle and 
table 



5-n 



Test indi- 
cator and 
weighing 
instrument 



The load (F) is 
applied via 
table to spin- 
dle vertically 
or horizontally. 
Measure the 
relative dis- 
placements 
between spindle 
and table. 



( 1 ) -f: 



^L 



M 



(2) 




Cutter block 

and table of 

automatic 

planing and 

moulding 

machine 
Spindle and 

table of multl- 

spindle wood 

borer 
Grinding drum 

and table of 

drum Sander 



4, Specifications of Static Accuracy Tests 

4.1 Objectives and Items of Static Accuracy Test Static accuracy tests 
are intended to check the accuracies of forms and motions of essential parts 
which compose a wood working machine and the assembling accuracies of 
units or components, especially, considered to affect working* accuracy. 
These include straightness, circularity, cylindricity , parallelism, flatness, 
perpendicularity, run-out of rotating axis, axial movement of rotating axis, 
coaxiality, and lead accuracy of screw threads, 

4.2 Straightness The definition of straightness and its expressing 
method, and test items and their measuring methods are as follows: 

(1) Definition The degree of deviation from the geometrical straight 
line of the form of machine part or its motion supposed to be a 
straight line. 

(2) Expressing Method The straightness shall be expressed as the 
difference of the maximum distance and the minimum distance bet- 
ween the measured line and the reference line, or the difference 
of the largest tangents and the smallest tangent of angles formed 
by measured lines with reference to the reference line. The dis- 
tance shall be measured in normal direction to the reference line. 



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B 6501-1975 



(3) Test Items and their Measuring Methods 



Item 



No. 



Measuring 
instrument 



Measuring method 
and indication 
of tolerance 



Drawing 



Typical examples 

of application 
(Reference) 



Straight- 
ness (of 
form) of 
machine 
component 
parts 



6-11 



Precision 
level, or 
auto-colli- 
inator 



Take the hori- 
zontal line as 
reference. The 
maximum differ- 
ence of readings 
taken at several 
positions. 



y^?^r7rr^^'''''^^'^^^^P77: 



Slide face of 
bed of veneer 
knife grinder 

Slide face of 
bed of numeri- 
cally con- 
trolled router 



When It is re- 
quired to know 
the precise form 
(of surface), 
it may be mea- 
sured by chain 
rule as shown 
in the drawing. 




^^^C^^^TTZ^^^^ 



6-12 



Straightedge 
and test 
indicator 



Take a straight- 
edge as the ref- 
erence line. 
Maximum differ- 
ence of readings 
to straightedge. 



te] r^- 



^ 



-A- 



] 



v//////////////////^ 



Hot plate of 
hot press 

Peripheral sur- 
face of saw 
wheel of band 
saw machine 



6-13 



Straightedge 
and feeler 
gauge 



Take a straight- 
edge as the ref- 
erence line. 
Maximum clear- 
ance between the 
straightedge and 
an object to be 
measured. 




Ruler face of 

hand planing 

and moulding 

machine 
Knife fitting 

face of veneer 

lathe 
Slide face of 

head block of 

carriage 



Straight- 
ness of 
motion 



6-21 



Straightedge 
(fixed on 
moving part) 
and test 
indicator 
(fixed) 



Take a straight- 
edge as the ref- 
erence line. 
The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel. 



b. 



Reciprocating 
motion of moving 
rest of circular 
saw 

Motion of slicer 
knife holding 
stand 



6-22 



Straightedge 
and test 
indicator 
(fixed on 
moving part) 



6-23 



Steel wire 
Micrometer 
microscope 
(fixed on 
moving part) 



Take a straight- 
edge as the ref- 
erence line. 
The maximum dif- 
ference of 
readings through- 
out the range of 
travel. 



L 



2 



■77777^7777777777^777. 



Motion of knife 
holder of veneer 
lathe 

Front and back 
motion of 
circular saw 
spindle 



Take a line 
joining two ex- 
tremities of 
steel wire as 
the reference 
line. 

The maximum 
difference of 
readings 
throughout the 
range of travel. 




Reciprocating 
motion of 
grind Ing-wheel 
hold of veneer 
knife grinder 



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B 6501-1975 



Item 



No. 



Measuring 
instrument 



Measuring iDethod 
and indication 
of tolerance 



Drawing 



Typical examples 

of application 
(Reference) 



Straight- 
nesa of 
motion 



6-24 



Steel wire 
(fixed on 
moving part) 
and microm- 
eter 
microscope 



Take a line 
jointing two ex- 
tremities of 
steel wire as 
the reference 
line. 

The maximum 
difference of 
readings 
throughout the 
range of travel. 



6-25 



Precision 
level (fixed 
on moving 
part) 



Take the hori- 
zontal line as 
reference. 
The maximum 
difference of 
readings at 
several posi- 
tions 




_^5^™ 



Motion of saw 
hold stand of 
double sizer 



^'^ Circularity The definition of circularity and its expressing method, 
and test items and their measuring methods are as follows: 

^^) Definition The degree of deviation from the geometrical circle of 
the fbrm of a machine part supposed to be circular, 

(2) Expressing Method The circularity shall be expressed as the 
maximum difference of diameters or radii in a cross section* 

(3) Test Items and their Measuring Method 



Item 


No. 


Measuring 
instrument 


Measuring method 
and indication 
of tolerance 


Drawing 


Typical examples 

of application 
(Reference) 


Circu- 
larity of 
machine 
parts 


7-11 


Micrometer 
calliper 
for external 
measurement 


Measure four di- 
ameters spaced at 
45° angle. The 
maxlmuin differ- 
ence of readings 
of four di- 
ameters. 




\ 


Doctor roll of 
glue spreader 

Feed roll of 
double sizer 

Main spindles 
of band saw 
machine and 
circular saw 
machine 




7-12 


Straddle 
gauge of 
60* to 120° 


Measure radii at 
several posi- 
tions. The 
maximum differ- 
ence of readings 
of the radii at 
several posi- 
tions. 


yr workpiece ^^ 


Main spindle of 
circular saw 
machine 

Cutter block 
(circular) of 
planing and 
moulding 
machine 



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B 6501-1975 



4.4 Cylindricity The definition of cylindrlcity and its expressing 
method, and test items and their measuring methods are as follows: 

^^^ D^f^nition The degree of deviation from a geometrical cylinders 
of the form of a machine part supposed to be cylindrical, 

(2) Expressing Method The cylindricity shall be expressed as the 
difference of the largest diameter and the smallest diameter 
measured on a plane including the cylinder axis. 

(3) Test Items and their Measuring Method 



Item 


No. 


Measuring 
instrument 


Measuring method 
and indication 
of tolerance 


Drawing 


Typical examples 

of application 
(Reference) 


Cylindric- 


8-11 


Micrometer 


Measure diame- 




Doctor roll of 


ity of 




callipers 


ters of machine 




glue spreader 


machine 




for external 


part on two 




Feed roll of 


part 




measurement 


planes involving 
the axis and 
perpendicular to 
each other. 




double sizer 








Required value 
is the larger 
one of the maxi- 


/^ 




i i i 








■^, 














muin differences 
of diameters 




. 










\ 


J 














measured on each 
plane. Positions 


Vi^ 










T^ 


t t t 












to be measured 












are at least both 
ends (^) and 












central part of 












the cylindrical 












part in the 
axial direction. 







Note (^) Measurement on shear drop shall be avoided. 

4,5 Parallelism The definition of parallelism and its expressing method, 
and test items and their measuring methods are as follows; 

^^^ P^f^n^tion The degree of deviation from being geometrically 

parallel of the form of a machine part or its motion supposed to 
be parallel to the reference. 

(2) Expressing Method 

(a) For parallelism of two lines A and B, it shall be expressed as 
the maximum variation of distances between lines A and B on 
the basis of line A, or the maximum variation of tangent of 
angle for two lines A and B at the corresponding point, and 
the distance shall, as a rule, be measured in normal direction 
to the reference line. 

In general, line B shall be projected onto two planes perpen- 
dicular to each other and including the reference line A, and 
measurement shall be made on both planes. 



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B 6501-1975 



Parallelism 




(b) For parallelism of line and plane, it shall be expressed as the 
maximum variation of their distances referred to each line or 
plane. The distance shall, as a rule, be measured in normal 
direction to the reference line or the reference plane, 

(c) For parallelism of two planes, it shall be expressed as the 
maximum variation of distances of a plane from the other plane 
as a reference. The distance shall, as a rule, be measured in 
normal direction to the reference plane. 



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B 6501-1975 



(3) Test Items and their Measuring Method 



Item 



No. 



Measuring 
instrument 



Measuring method 
and Indication of 
tolerance 



Drawing 



Typical examples 
of application 
(Reference) 



Paral- 
lelism 
of 

machine 
cor^ponent 



Parallel- 
ism of two 
planes 



9-11 



Test indicator 
and end measure 
(may be used as 
auxiliary. ) 



Tlie maximum dif- 
ference of read- 
ings taken at 
several positions 



£3^ 



Cross rati and 
table of copying 
chamfering machine 
and numerically 
controlled router 



''y////y//////A 



Straightedge and 
precision level 



The maximum dif- 
ference of read- 
ings at several 
positions 



n 


PI 


1§ 


S 


LJ 


u 



Right and left- 
fixed slide faces 
of veneer lathe 

Right and left 
sliding faces of 
tool rest of 
veneer clipper 



Parallel- 
ism of 
axis and 
plane 



9-2L 



Test indicator 
j Test bar and 
i test indicator 



The maximuin dif- 
ference of read- 
ings throughout 
the range of 
travel 






7^ 



y/////'/}///////^///. 



Saw-holding down- 
face bX\^ itiain 
spindle of band 
saw sharpener 

Main axis of gang 
rip saw and top 
face of caterpillar 



9-22 



Test indicator 

(fixed) 

I Test bar and 
I test indicator 

(fixed) 



TJie maximurn dif- 
ference of read- 
ings throughout 
the range of 
travel 



no 



It 



Up and down movement 
of table, zvK^ main 
spindle of router 

Each plate of veneer 
jointer 

Up and down movement 
of clamping table 
and spindle 



o= 



9-23 



End measure and 
feeler gauge 



Xl)e maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 



Main spindle and 
surface plate of 
automatic planing 
and moulding 
machine 



W///////?/////A 






Parallel- 
ism of 

two axes 



9-31 



Straightedge and 
precision level 



The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 



fi 



IB 



E?=D 



> 



Rollers of table of 
automatic roller 
band saw machine 

Feed rollers of 
double sizer 



> 



PROTECTED BY COPYRIGHT 



13 
B 6501- 



1975 



Item 



Measuring 
instrument 



Measuring method 
and indication of 
tolerance 



Drawing 



Typical examples 
of application 
(Reference) 



Paral- 
lelism 
of 

motion 



Parallel- 
ism of 
motion 
and plane 



9-41 



Test Indicator 
(fixed) 



The maximijm dif- 
ference of read- 
ings throughout 
the range of 
travel 



A 



lest Indicator 
(fixed on a 
moving part) 



The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 



1 



//////////////y 



Motion of tool rest 
of veneer slicer 

Motion of table of 
-wood railltng 
machine 

t^otlon of table of 
tenoning machine 
Ax\<^ double siKer 



Haln spindle of 
veneer lathe and 
tool fitting face 
of tool rest 

Vibration stop of 
band saw machine 
and band sawing 
face 

Cross rail of 
numerically con- 
trolled router 



Parallel- 
ism of 
motion 
and axis 



Test bar and test 
indicator (fixed 
on a moving part) 



The maxlinuTn dif- 
ference of read- 
ings throughout 
the range of 
travel 




9-52 



Test bar and test 
indicator (fixed) 



The maKtmum dif- 
ference of read- 
ings throughout 
the range of 
travel 




Straightedge or 
square surface 
plate (fixed on 
a moving part) 
and test Indicator 



The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 




Tool rest and main 
spindle of wood- 
working lathe 



Tail stock and bed 
of wood lathe 



Tool rest and main 
spindle of wood 
lathe 



Straightedge or 
square surface 
plate and test 
indicator 
(fixed on a 
moving part) 



The ttjaximuni dif- 
ference of read- 
ings throughout 
the range of 
travel 



EFl€ 



Saw spindle and top 
face of table of 
tenoning machine 



PROTECTED BY COPYRIGHT 



14 
B 6501-1975 



^•^ F'lQtness The definition of flatness and its expressing method, and 
test items and their measuring method are as follows: 

(1) 



(2) 
(3) 



Definition The degree of deviation from the geometrical plane 
of a surface of a machine part supposed to be flat. 

Expressing Method The flatness shall be expressed as straight- 
ness on a plane m two directions perpendicular to each other. 

Test Items and their Measuring Method 



Item 


No. 


Measuring 
instrument 


Measuring method 
and indication 
of tolerance 


Drawing 


Typical examples 

of application 
(Reference) 


Flat- 
ness of 
machine 


10-11 


Precision 

level 


Take a horizon- 
tal plane as 
the reference. 
The maximum 
difference of 
readings taken 
at several 
points. 








Table of table 
band saw and 
planing and 


part 




1 j 




moulding 




1 —^ 


machine 
Top surface of 
surface plate 
or movable 




t ■ j- 










surface plate 
of cold press 



4.7 Squareness The definition of squareness and its expressing 
method, and test items and their measuring methods are as follows: 

^^^ P^f^^^tion The degree of deviation from the geometrical square 
of theTorm of a machine part or its motion supposed to be 

square, 

(2) Expressing Method 

(a) For two lines A and B , the squareness shall be expressed as 
parallelism of line B to the reference plane perpendicular to 

line A, 

(b) For a line and a plane, the squareness shall be expressed as 
either one of the following: 

(i) Parallelism of plane to the reference plane perpendicular to a 

line. 

(ii) Parallelism of a line to the reference line perpendicular to a 
plane. 

(c) For two planes, the squareness shall be expressed as parallel- 
ism of a plane to the reference line perpendicular to the other 
plane , 



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15 
B 6501- 



1975 



(3) Test Items and their Measuring Method 



^teasllring 
Instrument 



Measuring method 
and indication of 
tolerance 



Drawing 



Typical examples 
o£ application 
(Reference) 



Square- 
ness of 
machine 
part 



Perpen- 
dicularity 
of one 
plane to 
the other 



Box precision 
level 



The maxinium dif- 
ference of read- 
ings at several 
points 



I 



I 



□ 



HI \q\ 



'Uy/////y/2y/}//, 



Straightedge 
and feeler 



The majtlmum value 
between a subject 
to be measured 
and the square 



Head block of 

carriage 
Sliding face of 

bed of veneer 

Jointer 



Head block of 
carriage 

Table of circular 
saw machine or 
hollow chisel 
mortiser and 
square 



Perpen- 
dicularity 
of axis 
to plane 



11-21 



Test indicator 
j Test bar and 
\ test indicator 



Difference of 
readings in each 
of the two posi- 
tions at lao*' 




V777777777^y 



Test indicator 



Difference of 
readings in each 
of the two posi- 
tions at 180^ 









Main spindle of 
circular saw 
machine and 
square surface 

Main spindle and 
top surface of 
table of vood 
borer and router 



Between top face 
of table and ver- 
tical spindle of 
vertical tenoning 
machine 



Perpen- 
dicular- 
ity of 
motion 



Perpen- 
dicularity 
of motion 
to plane 



Straightedge or 
square surface 
plate 

(fixed on a 
moving part) 
and test indi- 
cator (fixed) 



The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 



=o 




Vibration stop of 
band saw machine 

Between up and down 
movement of main 
spindle of hollow 
chisel mortiser 
and table surface 



PROTECTED BY COPYRIGHT 



16 
B 6501-1975 



No. 



Measuring 
instrument 



Measuring method 
and indication of 
tolerance 



Drawing 



Typical examples 
of application 
(Reference) 



Perpen- 
dicular- 
ity of 
motion 



Perpen- 
dicularity 
of motion 
to plane 



Straightedge or 
square surface 
plate and test 
indicator 
(fixed on a 
moving part) 



The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 




Between movements of 
saw spindle head 
of double sizers 
and top face of 
chain case 

Between up-and-down 
movement of main 
spindle of hollow 
chisel mortiser 
and table surface 



Perpen- 
dicularity 
of motion 
to axis 



Square surface 
plate (fixed on 
a moving part) 
and test indi- 
cator 



Difference of 
readings in each 
of the two posi- 
tions at 180*' 




Between motions 
of main spindle 
of rip saw and 
top face of 
caterpillar 



Perpen- 
dicularity 
of one 
motion to 
the other 



11-51 



Straightedge 
(fixed on a 
moving part) and 
test indicators 
(one fixed and 
the other fixed 
on a moving 
part) 



The maximum dif- 
ference of read- 
ings throughout 
Che range of 
travel 



Between move- 
ments of movable 
tables of hollow 
chisel mortiser 



^■.<: 



>Lriii 



h^^zr 



^ 



Straightedge 
(fixed on a 
moving part) 
and test indi- 
cator (fixed) 



The maximum dif- 
ference of read- 
ings throughout 
the range of 
travel 



;> 



L — ^lil — I 



Between movements 
of movable 
tables of hollow 
chisel mortiser 



PROTECTED BY COPYRIGHT 



17 
B 6501-1975 



4,8 Run-out of Rotating Axis The definition of run-out of rotating axis 
and its expressing method, and test items and their measuring methods are 
as follows: 

(1) Definition Runout of the rotating axis means radial throw of 
the axis of a rotating cylindrical machine part, 

(2) Expressing Method The run-out shall be expressed as the 
maximum deviation of radial throw of revolving surface to be 
tested during several rotations while the spindle is slowly 
rotated* The resultant measured value shall be deemed as the 
compound of the surface abnormalities. 

(3) Test Items and Measuring Method 



Measuring 
instrument 



Measuring method 
and Indication of 
tolerance 



Drawing 



Typical examples 
of application 
(Reference) 



Run-out 


Run-out 


of ex- 


of ex- 


ternal 


ternal 


surface 


surface 




of 




machine 




part 



12-11 



Test indicator 
(fixed) 



The maxiEDuni dif- 
ference of read- 
ings during 
rotation 



T^ 



Spindle of circular 

saw machine and 

veneer lathe 
Wheel spindZe of 

veneer knife 

grinder 



Run-out 
of in- 
ternal 
surface 



Run-out 
of in- 
ternal 
surf-ace 



Test bar and 
test indicator 
(fixed) 



The maximum dif- 
ference oE read- 
ings during 
rotation 



Main spindle of 
wood milling 
machine 



9 



•7K 
V 



0- 



Run-out 
of in- 
ternal 
surface 
of parts 
fitted 
to the 
spindle 



Test bar and 
test indicator 
(fixed) 



The maximunj dif- 
ference of read- 
ings during 
rotation 



H 



Chuck of router 



o= 



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18 
B 6501-1975 



4.9 Periodical Axial Slip The definition of periodical axial slip and its 
expressing method, and test items and their measuring methods are as 
follows: 

^^^ P^f^^^Q^ Extent of periodical axial movement of a point on the 
rotation axis during its rotation. 

(2) Expressing Method The movement shall be expressed as the 
maximum axial slip of the axis when the axis is rotated slowly. 
In this case, it is preferable to apply a required force to the 
axis to eliminate the play in the direction of normal working 
thrust. When the measurement is made on the end surface ^ it 
should be understood that the measured value includes irregu- 
larities of the end surface ♦ 

(3) Test Items and their Measuring Method 



Jtera 


No. 


Measuring 
instrument 


Measuring method 
and indication 
of tolerance 


Drawing 


Typical examples 

of application 
(Reference) 


Axial 
slip 
of a 

rotating 
part 


13-11 


Test bar and 
test indi- 
cator (fixed) 


The maximuin 
difference of 
readings during 
rotation 


-pLWi 


^^ 


Saw spindle of 
double sizer 

Wheel spindle of 
veneer knife 
grinder 




^m> 




Axial 
slip of 
a plane 
perpen- 
dicular 
to an 
axis 


13-21 


Test indi- 
cator 
(fixed) 


The maximum dif- 
ference of read- 
ings during ro- 
tation. Take 
the larger of 
readings for 
the two posi- 
tions at 180'', 


=o- 


n 


Saw spindle of 
double sizer 

Wheel spindle of 
veneer knife 
grinder 


during 
its ro- 
tating 
around 
the axis 


ol 


J^ 





4.10 Coaxiality The definition of coaxiality and its expressing method, 
and test items and their measuring methods are as follows: 

^^^ P^finition The degree of deviation from being coincident of two 
axes of cylindrical parts which are aligned so as to have a 
common axis. 

(2) Expressing Method The coaxiality shall be expressed as the 

distance between the centers of two circles projected on a cross 
section perpendicular to the axis of a cylindrical part. 



PROTECTED BY COPYRIGHT 



(3) Test Items and their Measuring Methods 



19 
B 6501-1975 



Item 



No, 



Measuring 
instruinent 



Measuring method 
and indication 
of tolerance 



Drawing 



Typical examples 

of application 
(Reference) 



Align- 
ment of 
two axes 
of cy- 
lindrical 
parts 



U-11 



Test indi- 
cator and 
test bar 



1/2 of the maxi- 
mum difference 
of readings when 
test indicator 
is rotated 
around an axis 






i^> 



cU? 



BetxsTcen center 
pin and spindle 
of router 



Coinci- 
dence of 
axes of 
internal 
and ex- 
ternal 
cylinders 



14-21 



Test bar and 
test indi- 
cator 



1/2 of the maxi- 
mum difference 
of readings 
during rotation 




hn 



m 






Between main 
spindle and 
chisel holder 
of hollow 
chisel 
mortiser 



4,11 Accuracy of Lead of Screw Thread The definition of the accuracy 
of lead of screw thread and its expression method, and test items and their 
measuring methods are as follows: 

(1) Definitions The degree of deviation from the reference dimension 
of an axial dimension of screw threads or rectilinear displacement 
generated by lead of screw of a machine component. 

(2) Expressing Method The lead accuracy shall be expressed as 
the difference of an axial distance between two points on a helix 
or a value of displacement generated by lead of screw of a 
machine part from the theoretical distance, 

(3) Test Items and their Measuring Methods 



Item 



No. 



Measuring 
instrument 



Measuring method 
and Indication 
of tolerance 



Drawing 



Typical examples 

of application 
(Reference) 



Cumula- 
tive 
error 



15-11 



End measure 
and test 
indicator 
(fixed) 



Tlie maximum 
difference of 
readings 
throughout the 
range of travel 



M=^ 



Set works of 

twin band saw 

machine 
Positioning for 

width of double 

slzer 
Positioning of 

numerical 

controlled 

router 



PROTECTED BY COPYRIGHT 



20 

B 6501-1975 



5, Specifications of Dynamic Accuracy Tests 

5.1 Objectives and Items of Dynamic Accuracy Test The dynamic 
accuracy test is intended to check such dynamic accuracies of motions of 
essential parts composing wood working machines, as are considered to 
affect working: accuracy. The test shall be performed for the following 
items: 

5.2 Dynamic Balance The definition of dynamic balance and its ex- 
pressing method, and the test item and its measuring method are as follows: 

f^) definition The degree of deviation from the ideal rotation of a 
high-speed rotation of a machine part. 

(2) Expressing Method The eccentricity «(m) of balancing plane to 
be corrected of the high-speed rotating body shall be measured* 
Dynamic balance is expressed as the value (mm/s: balance quali- 
ty) of the measured value multiplied by the maximum working 
angular velocity [_o)(Tad/B)^ of the rotating body divided by 
1000. 



Balance quality 



1000 



(3) 



Test Items and their Measuring Methods The mass of the 
rotating body (M) and the degree of unbalance (mr) shall be 
measured. Eccentricity (e) of the balancing plane is calculated 
by the following equations: 



Item 


No. 


Measuring 
instrument 


Measuring 
method for e 


Drawing 


Typical examples 

of application 
(Reference) 


Dynamic 

balance 

of 

machine 

part 


16-11 


Dynamic 

balancing 

machine 


In the case of two 
plane balancing 

2 2 




Circular cutter 
block and drum 
of drum sander 




In the case of one 
plane balancing 


Saw wheel of 
band saw 
machine 



PROTECTED BY COPYRIGHT 



21 
B 6501-1975 



6. Specificat ions of Working Accuracy Tests 

6,1 Objectives and Items of Working Accuracy Test Working accuracy 
tests are intended to check the accuracy of workpienes alrpady machined. 
They include the check of straightness, parallelism, squareness^ accuracy 
of thickness and size variation. 

^'^ Straightness The definition of stralghtness and its expressing 
method, and its measuring methods are as follows: 

^^^ Def^^^tion The degree of deviation from the geometrical straight 
line of a machined part supposed to be a straight line. 

(2) Expressing Method The stralghtness shall be expressed as the 
maximum difference of distances between the measured line and 
the reference line. The distance, as a rule, shall be measured 
in normal direction to the reference line. 

(3) Measuring Method Either one of the methods described below 
shall be used: 

(a) Machine a test piece (^), apply a straightedge on the machined 
surface, and measure the clearance. The required value shall 
be the maximum value of clearance. 

(b) Machine two test pieces (^) under the same working conditions, 
then place the two pieces in contact with each other, worked 
face to worked face, and measure the clearance between the two 
faces. One half of the maximum value of clearance shall be 
taken as the measured value. 

^•^ Parallelism The definition of parallelism, and its expressing 
method, and its measuring method are as follows: 

^^^ D^fi^ition The degree of deviation from being geometrically, 
parallel to the reference of the form of a machined part. 

(2) Expressing Method As for parallelism of two planes A and B, it 
shall be expressed as the maximum variation of distances of a 
plane A from the other plane B as a reference. The distance 
shall, as a rule, be measured in normal direction to the refer- 
ence plane. 

(3) Measuring Method Machine a test piece (^) and measure the 
distance between two opposite faces at least at three positions, 
i.e., the middle position and both ends. The required value 
shall be the maximum deviation of the distances. 



PROTECTED BY COPYRIGHT 



22 
B 6501-1975 



Figure 




6.4 Perpendicularity The definition of perpendicularity ^ and its ex- 
pressing method, and its measuring methods are as follows: 

(1) Definition The degree of deviation from being perpendicular 
geometrically of an angle formed by two machined planes. 

(2) Expressing Method The parallelism shall be expi^essed as the 
parallelism of a plane to the reference line perpendicular to the 
other plane, 

(3) Measuring Method Either one of the following methods shall be 
used. 

(a) Machine a piece of test wood (^), place a side of a square and 
a side of the test wood on a reference plane, and measure the 
differences between the other side of the test wood (^) and the 
other side of the square. The maximum difference is taken as 
the measured value (Fig. 1). 

(b) Machine two pieces of test wood (^) under the same conditions, 
apply the corresponding sides of the test wood pieces on a 
reference plane, and measure the clearance on the plane 
between the machined sides in contact with each other. One 
half of the maximum clearance is taken as the measured value 
(Fig, 2). 



Fig. 1 



Fig, 2 



-^ 




777777777777T777777T 




6.5 Thickness Accuracy The definition of thickness accuracy and its 
expressing method, and its measuring method are as follows: 

f^^ D^fi^^tion The degree of variation of the thickness in a machined 
work-piece . 



PROTECTED BY COPYRIGHT 



23 
B 6501-1975 



(2) Expressing Method The accuracy shall be expressed as the 
difference between the maximiim and minimum values measured. 

(3) Measurin g Method Measure thickness at least at the middle and 
both end positions (^), The maximum difference is taken as the 
measured value. 

Notes (^) The test wood shall be of good quality, 

(^) Measurement shall be made on the positions free from 
shear drop, flash, etc. 

6.6 Size Variation The definition of size variation and its expressing 
and measuring methods are as follows: 

(-^^ Definition The degree of variation of forms or dimensions of 
workpieces which are machined to be of an identical shape. 

(2) Expressing Method The size variation shall be expressed as the 
difference between the maximum and the minimum of measured 
values C) for the measurement items made on all machined 
workpieces. 

Note O) This may be the mean of measured values for the 

measurement item made on one kind of workpiece, if 
required. 



PROTECTED BY COPYRIGHT 



24 
B 6501-1975 



Appendix 
1. Measuring Instruments for Running Tests 

1. Measurement of Insulation Resistance 

Use an insulation resistance tester specified in JIS C 1301. 

2. Measurement of Linear Velocity 

Use a test indicator and a stopwatch, a call meter and a stopwatch 
or tachometer, 

3. Measurement of Number of Revolutions 

Use a tachometer specified in JIS B 7521 or a stroboscope. 

4. Measurement of Temperature 

Use an etched-stem liquid-in-giass thermometer specified in JIS B 
7411, a thermoelectric thermometer in JIS C 1601, or a resistance ther- 
mometer in JIS C 1603. 

5. Measurement of Electric Power 

Use a wattmeter specified in JIS C 1102, or a voltmeter, an ammeter, 
and a power factor meter specified in JIS C 1102. 

6. Measurement of Vibration 

Use a vibrometer specified in JIS B 6003. 

7. Measurement of Noise 

Use a sound-level meter specified in JIS B 6004, 

8. Measurement of Rigidity 

Use a lever, a weight and a test Indicator, or a load meter and a test 
indicator, 

9. Others 

Use a magnifier^ water content meter, etc. 



PROTECTED BY COPYRIGHT 



25 
B 6501-1975 



2» Accuracy of Measuring Instruments for Testing of Accuracy 



1. The permissible deviation of a test indicator shall be within 0.003 mm 
over the working range. 

When a dial gauge is used, it shall be of Grade 1 in JIS B 7503 or one 
specified in JIS B 7509. 

2. The tolerance on straightness and cylindricity of a test bar shall be 
^0.0014-—^—) mm, where L represents the effective length (mm) of the 
cylindrical part. 

3. The tolerance on coaxiaiity of the cylindrical part and the tapered part 
of a test bar shall be 0,004 mm. 

4. The tolerance on coaxiaiity of the center hole and the cylindrical part 
of a test bar shall be 0*004 mm. 

5. The diameter of a test bar shall be selected so that the deflection due 
to its own weight will not cause a measuring error* 

6. The tolerance on the straightness of a straightedge and a square 
surface plate shall be (o.ooi+^^-~j mm, where L represents the effective 
length (mm). The straightedge shall be longer than the length to be 

measured. 

7. The diameter of steel wire used for the measurement of straightness 
shall be not more than 0,16 mm and the straightness of a straightedge 
shall be applied correspondingly to that of taut steel wire. 

Further, when deflection due to weight of wire itself is considered to 
cause a measuring error, this method shall not be used. 

8. The permissible deviation of readings of a micrometer microscope shall 
be ± 0.002 mm. nm, 

9. The dimensional accuracy of Grade B in JIS B 7506 shall be applied 
correspondingly to that of an end measure. 

10. The tolerance on the squareness of a square and a square surface 
plate shall be ='^(f*of*2+-™-^ mm in a position on the side L mm distant from 
the vertex. 

11. A feeler gauge specified in JIS B 7524 shall be used. 

12. A precision level of Class 1 or Class 2 specified in JIS B 7510 or JIS 
B 7511 shall be used. 



PROTECTED BY COPYEIGKr 



26, 
B 6501-1975 



Applicable Standards: 

JIS B 6003-Methods of Vibration Testing for Machine Tools 

JIS B 6004-Method of Sound Level a^easurement for Machine Tools 

JIS B 7411-Etched-Stem Liquid~in~Glass Thermometers ^ Total Immersion 
Type 

JIS B 7503-Dial Gauges Reading in 0,01 mm 

JIS B 7506-Gauge Blocks 

JIS B 7509~Dial Gauges Reading in 0*001 mm 

JIS B 7510-Precision Square Levels 

JIS B 7511-Precision Levels 

JIS B 7521-Portable Chronometric Tachometers 

JIS B 7524-Feeler Gauges 

JIS C 11 02 "Electrical Indicating Instruments 

JIS C 1301-Insulation Resistance Testers (Magneto Generator Operated) 

JIS C 1601-Indicating Thermoelectric Thermometers 

JIS C 1603~Indicating Resistance Thermometers 

Reference Standards: 

JIS B 7502-Micrometer Callipers for External Measurement 

JIS B 7507-Vernier Callipers 

JIS B 7512-Steel Tape Measures 

JIS B 7513-Precision Surface Plates 

JIS B 75i4-Steel Straightedges 

JIS B 7526-Squares 

JIS G 3521-Hard Drawn Steel Wires 

JIS G 3522-Piano Wire 

JIS Z 8203-SI Units and the Use of their Multiples and of Certain 
other Units 



PROTECTED BY COPYRIGHT 



B 6501-1975 
Edition 1 



Japanese Text 
Established by Minister of International Trade and Industry 
Date of Establishment: 1960-03-01 
Date of Revision: 1975-09-01 
Date of Reaffirmation: 1978-09-01 

Date of Public Notice in Official Gazette: 1978-10-30 
Investigated by: Japanese Industrial Standards Committee 
Divisional Council on Machine Tools 



Technical Committee on Wood Working 
Machinery 



This English translation is published by: 

Japanese Standards Association 

1-24, Akasaka 4, Minato-ku, 

Tokyo 107 Japan 

© JSA, 1986 



Printed in Tokyo by 



PROTECTED BY COPYRIGHT